an everyday moment can turn romantic at a moment's notice. and when it does, men with erectile dysfunction can be more confident in their ability to be ready with cialis. with two clinically proven dosing options, you can choose the moment that's right for you and your partner. 36-hour cialis and cialis for daily use. cialis for daily use is a low-dose tablet you take every day, so you can be ready anytime the moment's right. day or night. >> tell your doctor about your medical condition and all medications and ask if you're healthy enough for sexual activity. >> don't take cialis if you take nitrates for chest pain, as this may cause an unsafe drop in blood pressure. >> don't drink alcohol in excess with cialis. side effects may include headache, upset stomach, delayed backache, or muscle ache. to avoid long-term injury, seek immediate medical help for an erection lasting more than 4 hours. >> if you have any sudden decrease or loss in hearing or vision, stop taking cialis and call your doctor right away. >> 36-hour cialis or cialis for daily use. ask your doctor if cialis is right for you.